Theory of Operation

AIR MOTOR FUNCTION DURING UPSTROKE	CONSTANT AIR PRESSURE
	CONSTANT AIR PRESSURE
SPOOL
Pilot down	EXHAUSTED AIR
Air Pressure
Exhausted Air
AIR MOTOR FUNCTION DURING DOWNSTROKE	CONSTANT AIR PRESSURE
	CONSTANT AIR PRESSURE
SPOOL
Pilot up (exhaust)	EXHAUSTED AIR
Figure 2
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Image 2

Contents

General Description Service KitsOperating and Safety Precautions AIR and Lube Requirements Theory of Operation Air motor base assembly Disassembly / Assembly AIR Motor DisassemblyAIR Motor Assembly Place the 39 valve rod thru the 48 screw Assemble the 28 and 29 O rings into the 30 block manifold Disassembly / AssemblyClean the threads in the 20 spool Parts List Air leakage around 43 piston assembly Disassembly / ReassemblyTrouble Shooting Air leakage out of the main exhaust Cross Section Optional 66718 Muffler Assembly Muffler Installation Remove nut and sleeve from the 1 90 short angle el- bow